Home / 28,679.61-39,576.48-15,933.60

Finding the Fourth Proportional to 28,679.61, 39,576.48 and 15,933.60

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Solution

The fourth proportional to 28,679.61, 39,576.48 and 15,933.60 is: 21,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.61 : 39,576.48 = 15,933.60 : x
  2. Step 2: Convert to fraction form
    28,679.61/39,576.48 = 15,933.60/x
  3. Step 3: Cross multiply
    28,679.61x = 39,576.48 × 15,933.60
  4. Step 4: Simplify right side
    28,679.61x = 630,595,801.73
  5. Step 5: Solve for x
    x = 630,595,801.73/28,679.61
  6. Step 6: Final answer
    x = 21,987.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.